In Python, I can do something like this:
t = (1, 2)
a, b = t
...and a will be 1 and b will be 2. Suppose I have a list '(1 2) in Scheme. Is there any way to do something similar with let? If it makes a difference, I'm using Racket.
In racket you can use match,
(define t (list 1 2))
(match [(list a b) (+ a b)])
and related things like match-define:
(match-define (list a b) (list 1 2))
and match-let
(match-let ([(list a b) t]) (+ a b))
That works for lists, vectors, structs, etc etc. For multiple values, you'd use define-values:
(define (t) (values 1 2))
(define-values (a b) (t))
or let-values. But note that I can't define t as a "tuple" since multiple values are not first class values in (most) scheme implementations.